.design-header{
  background-color: #000000;
}
.design-tree{
  background-color: #1d2126;
}
.design-lib{
  background-color: #1B1E23;
}
.design-content{
  background-color: #22252C;
  padding: 0;
}
.design-config{
  background-color: #1B1E23;
}